SYSTEM AND METHOD FOR GRADIENT IMAGING SENSORS
First Claim
1. A processing system for an input device, the processing system comprising:
- a transmitter module comprising transmitter circuitry, the transmitter module coupled to a plurality of transmitter electrodes and configured to drive a first end of a first transmitter electrode of the plurality of transmitter electrodes to produce a first voltage gradient across the first transmitter electrode;
a receiver module, the receiver module configured to receive a plurality of resulting signals with a plurality of receiver electrodes, the plurality of resulting signals each comprising effects of the first voltage gradient; and
a determination module configured to determine a two-dimensional capacitive image based on the plurality of resulting signals, and wherein the determination module is further configured to determine positional information for a first input object located within a sensing region based on the capacitive image.
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Accused Products
Abstract
A processing system for an input device includes a transmitter module, a receiver module, and a determination module. The transmitter module, which includes transmitter circuitry, is coupled to a plurality of transmitter electrodes and configured to drive a first end of a first transmitter electrode of the plurality of transmitter electrodes to produce a first voltage gradient across the first transmitter electrode. The receiver module is configured to receive a plurality of resulting signals with a plurality of receiver electrodes, the plurality of resulting signals each comprising effects of the first voltage gradient. The determination module is configured to determine a two-dimensional capacitive image based on the plurality of resulting signals, and determine positional information for a first input object located within a sensing region based on the capacitive image.
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Citations
20 Claims
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1. A processing system for an input device, the processing system comprising:
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a transmitter module comprising transmitter circuitry, the transmitter module coupled to a plurality of transmitter electrodes and configured to drive a first end of a first transmitter electrode of the plurality of transmitter electrodes to produce a first voltage gradient across the first transmitter electrode; a receiver module, the receiver module configured to receive a plurality of resulting signals with a plurality of receiver electrodes, the plurality of resulting signals each comprising effects of the first voltage gradient; and a determination module configured to determine a two-dimensional capacitive image based on the plurality of resulting signals, and wherein the determination module is further configured to determine positional information for a first input object located within a sensing region based on the capacitive image. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image gradient sensor device comprising:
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a plurality of transmitter electrodes; a plurality of receiver electrodes; and a processing system communicatively coupled to the plurality of transmitter electrodes and the plurality of receiver electrodes, the processing system configured to; drive a first end of a first transmitter electrode to produce a first voltage gradient across the first transmitter electrode; receive a plurality of resulting signals with the plurality of receiver electrodes, the plurality of resulting signals each comprising effects of the first voltage gradient; determine a two-dimensional capacitive image based on the plurality of resulting signals; and determine positional information for a first input object located within a sensing region based on the capacitive image. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of capacitive sensing, the method comprising:
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driving a first end of a first transmitter electrode to produce a first voltage gradient across the first transmitter electrode; receiving a plurality of resulting signals with a plurality of receiver electrodes to produce a two-dimensional capacitive image, the plurality of resulting signals each comprising effects of the first voltage gradient; and determining positional information for a first input object located within a sensing region based on the capacitive image. - View Dependent Claims (17, 18, 19, 20)
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Specification